Diâmetro Ø : 20
K2B1029, K2B0528XU, 9254310950, 9253213410, 1606835, 1629515, 1731941
4231049000, 0074200118, 81511016175
BS3547, 4231067000, 4235060810, 81511016467, 81511016483, 20708819, 1542893
BZ6621, 4253250610, 81504106118, 81504106125, 81504106160, 81504106217, 5000560850